package cn.com.zzl.util;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.Map;

/**
 * Description：网络编程HTTP工具类，即使用该工具类调用远程接口
 * Created by 朱正磊 on 2017-06-16 10:01.
 */
public class HttpRequestUtil
{
	public static String sendGet(String url, String param)
	{
		String result = "";
		BufferedReader in = null;
		try {
			String urlNameString = url + "?" + param;
			URL realUrl = new URL(urlNameString);

			URLConnection connection = realUrl.openConnection();

			connection.setRequestProperty("accept", "*/*");
			connection.setRequestProperty("connection", "Keep-Alive");
			connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");

			connection.connect();

			Map<?, ?> map = connection.getHeaderFields();

			for (Object key : map.keySet()) {
				System.out.println(key + "--->" + map.get(key));
			}

			in = new BufferedReader(new InputStreamReader(connection.getInputStream()));

			String line;
			while ((line = in.readLine()) != null)
			{
				result = result + line;
			}
		} catch (Exception e) {
			System.out.println("发送GET请求出现异常！" + e);
			e.printStackTrace();
		}
		finally {
			try {
				if (in != null)
					in.close();
			}
			catch (Exception e2) {
				e2.printStackTrace();
			}
		}
		return result;
	}

	public static String sendPost(String url, String param)
	{
		OutputStreamWriter out = null;
		BufferedReader in = null;
		String result = "";
		try {
			URL realUrl = new URL(url);
			HttpURLConnection conn;
			conn = (HttpURLConnection)realUrl.openConnection();

			conn.setDoOutput(true);
			conn.setDoInput(true);
			conn.setRequestMethod("POST");

			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");

			conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

			conn.connect();

			out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");

			out.write(param);

			out.flush();

			in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));

			String line;
			while ((line = in.readLine()) != null)
			{
				result = result + line;
			}
		} catch (Exception e) {
			System.out.println("发送 POST 请求出现异常！" + e);
			e.printStackTrace();
		}
		finally {
			try {
				if (out != null) {
					out.close();
				}
				if (in != null)
					in.close();
			}
			catch (Exception e2) {
				e2.printStackTrace();
			}
		}
		return result;
	}
}
